Secretary of the Air Force
http://globalskywatch.com/chemtrails/ubbthreads.php?ubb=showflat&Number=9917#Post9917


"Colonel Washbaugh ascribed widely reported grid patterns to overlapping aircraft flying north-south, east-west airways. The only thing wrong with this explanation, an air traffic controller told me in Texas, is that US airways do not run north-south."
http://globalskywatch.com/chemtrails/ubbthreads.php?ubb=showflat&Number=9917#Post9917